ramips: add support for the VoCore2 Lite

The VoCore2 Lite uses the same PCB as the Vocore2.
This patch moves the common VoCore2 parts into dtsi.

Removed memory node in the device tree source file.
Memory is detected automatically.

http://vocore.io/
http://vonger.net/
http://vonger.cn/

Specifications:
- SoC: MediaTek MT7688AN
- RAM: 64MB DDR2 EtronTech EM68B16CWQH-25H
- Flash: 8MB NOR SPI Flash GigaDevice GD25Q64CWIG
- Wireless: Built into MT7688AN with onboard IPEX connector

Firmware installation:
- VoCore2-Lite ships with firmware forked from OpenWrt.
- Installation from the bootloader is recommended.
- If using luci/sysupgrade use the -n option (do not keep settings)
  original firmware uses a modified proprietary MediaTek wireless driver.
- The wireless is disabled by default in LEDE.
- If reverting to factory firmware using the bootloader is recommended.

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Tested by: Noble Pepper <noblepepper@gmail.com>

9 files changed, 125 insertions, 51 deletions

diff --git a/target/linux/ramips/base-files/etc/board.d/01_leds b/target/linux/ramips/base-files/etc/board.d/01_leds
index 02f4b913d5..a2d5c2e7de 100644
--- a/target/linux/ramips/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/base-files/etc/board.d/01_leds
@@ -361,6 +361,9 @@ vocore-16M)
 vocore2)
 	set_wifi_led "$board:fuchsia:status"
 	;;
+vocore2lite)
+	set_wifi_led "$board:green:status"
+	;;
 w502u)
 	set_usb_led "$board:blue:usb"
 	set_wifi_led "rt2800pci-phy0::radio"
diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index 37984a81af..2f001134a2 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -302,7 +302,8 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"1:lan" "2:lan" "3:lan" "4:lan" "5:wan" "0@eth0"
 		;;
-	vocore2)
+	vocore2|\
+	vocore2lite)
 		ucidef_add_switch "switch0" \
 			"0:lan" "2:lan" "6t@eth0"
 		;;
diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index c57a2a5987..5278830eb7 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -240,6 +240,9 @@ get_status_led() {
 	vocore2)
 		status_led="$board:fuchsia:status"
 		;;
+	vocore2lite)
+		status_led="$board:green:status"
+		;;
 	w306r-v20|\
 	witi|\
 	zbt-wr8305rt)
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index 0087f2003b..a3f376e6ac 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -523,6 +523,9 @@ ramips_board_detect() {
 	*"VoCore2")
 		name="vocore2"
 		;;
+	*"VoCore2-Lite")
+		name="vocore2lite"
+		;;
 	*"VR500")
 		name="vr500"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 085bf94aac..8977381c86 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -149,6 +149,7 @@ platform_check_image() {
 	vocore-8M|\
 	vocore-16M|\
 	vocore2|\
+	vocore2lite|\
 	vr500|\
 	w150m|\
 	w2914nsv2|\
diff --git a/target/linux/ramips/dts/VOCORE2.dts b/target/linux/ramips/dts/VOCORE2.dts
index a2799e80f6..43f8475856 100644
--- a/target/linux/ramips/dts/VOCORE2.dts
+++ b/target/linux/ramips/dts/VOCORE2.dts
@@ -1,23 +1,13 @@
 /dts-v1/;
 
-#include "mt7628an.dtsi"
+#include "VOCORE2.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
 
 / {
 	compatible = "vocore,vocore2", "mediatek,mt7628an-soc";
 	model = "VoCore2";
 
-	chosen {
-		bootargs = "console=ttyS2,115200";
-	};
-
-	memory@0 {
-		device_type = "memory";
-		reg = <0x0 0x8000000>;
-	};
-
 	gpio-leds {
 		compatible = "gpio-leds";
 
@@ -28,20 +18,6 @@
 	};
 };
 
-&pinctrl {
-	state_default: pinctrl0 {
-		gpio {
-			ralink,group = "wled_an", "perst", "wdt";
-			ralink,function = "gpio";
-		};
-	};
-};
-
-&wmac {
-	status = "okay";
-	ralink,mtd-eeprom = <&factory 0x4>;
-};
-
 &spi0 {
 	status = "okay";
 
@@ -77,28 +53,3 @@
 		};
 	};
 };
-
-&esw {
-	mediatek,portmap = <0x7>;
-	mediatek,portdisable = <0x3a>;
-};
-
-&i2s {
-	status = "okay";
-};
-
-&gdma {
-	status = "okay";
-};
-
-&pwm {
-	status = "okay";
-};
-
-&uart1 {
-	status = "okay";
-};
-
-&uart2 {
-	status = "okay";
-};
diff --git a/target/linux/ramips/dts/VOCORE2.dtsi b/target/linux/ramips/dts/VOCORE2.dtsi
new file mode 100644
index 0000000000..dff9e544f9
--- /dev/null
+++ b/target/linux/ramips/dts/VOCORE2.dtsi
@@ -0,0 +1,49 @@
+#include "mt7628an.dtsi"
+
+/ {
+	compatible = "vocore,vocore2", "mediatek,mt7628an-soc";
+
+	chosen {
+		bootargs = "console=ttyS2,115200";
+	};
+};
+
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wled_an", "perst", "wdt";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+	ralink,mtd-eeprom = <&factory 0x4>;
+};
+
+&esw {
+	mediatek,portmap = <0x7>;
+	mediatek,portdisable = <0x3a>;
+};
+
+&i2s {
+	status = "okay";
+};
+
+&gdma {
+	status = "okay";
+};
+
+&pwm {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
diff --git a/target/linux/ramips/dts/VOCORE2LITE.dts b/target/linux/ramips/dts/VOCORE2LITE.dts
new file mode 100644
index 0000000000..8e87c1d519
--- /dev/null
+++ b/target/linux/ramips/dts/VOCORE2LITE.dts
@@ -0,0 +1,55 @@
+/dts-v1/;
+
+#include "VOCORE2.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "vocore,vocore2lite", "vocore,vocore2", "mediatek,mt7628an-soc";
+	model = "VoCore2-Lite";
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status {
+			label = "vocore2lite:green:status";
+			gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0x7b0000>;
+		};
+	};
+};
diff --git a/target/linux/ramips/image/mt7688.mk b/target/linux/ramips/image/mt7688.mk
index 4a50275a8d..2c181fc846 100644
--- a/target/linux/ramips/image/mt7688.mk
+++ b/target/linux/ramips/image/mt7688.mk
@@ -19,6 +19,14 @@ define Device/pbr-d1
 endef
 TARGET_DEVICES += pbr-d1
 
+define Device/vocore2lite
+  DTS := VOCORE2LITE
+  IMAGE_SIZE := $(ralink_default_fw_size_8M)
+  DEVICE_TITLE := VoCore VoCore2-Lite
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-sdhci kmod-sdhci-mt7620
+endef
+TARGET_DEVICES += vocore2lite
+
 define Device/wrtnode2r
   DTS := WRTNODE2R
   IMAGE_SIZE := $(ralink_default_fw_size_16M)